IFNG and neoplasm: At the end of experiment, the tumor weights in Ad-IFNγ groups were significantly lighter than those in Ad-LacZ or PBS group (Figure 5C and 5D), 1×108, 5×108, 1×109 and 2×109 pfu/dose of Ad-IFNγ treatment respectively produced 24.1%, 43.2%, 64.8%, and 73.5% of growth inhibition for CNE-2 xenografts (Figure 5C), 42.6%, 54.3%, 71.3% and 81.7% of growth inhibition for C666-1 xenografts (Figure 5D).